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2019-09-01 06:35:08

In this Week in Photos, the 2019 World Artificial Intelligence Conference (WAIC) is held in Shanghai; Hangzhou and Shenzhen experience a road and building collapse; and Costco Wholesale Corp. opens its first store in the Chinese mainland. 

Alibaba Group Chairman Jack Ma (left) and Tesla CEO Elon Musk (right) attend the opening ceremony of the World Artificial Intelligence Conference (WAIC) in Shanghai, Aug. 29, 2019. Zhao Yun for Sixth Tone

Alibaba Group Chairman Jack Ma (left) and Tesla CEO Elon Musk (right) attend the opening ceremony of the World Artificial Intelligence Conference (WAIC) in Shanghai, Aug. 29, 2019. Zhao Yun for Sixth Tone

An attendee looks at a semi-humanoid robot at the World Artificial Intelligence Conference (WAIC) in Shanghai, Aug. 29, 2019. Qilai Shen/Bloomberg/VCG

An attendee looks at a semi-humanoid robot at the World Artificial Intelligence Conference (WAIC) in Shanghai, Aug. 29, 2019. Qilai Shen/Bloomberg/VCG

Cement is being poured into the subsided section of a road in Hangzhou, Zhejiang province, Aug. 28, 2019. A subway line runs under the cave-in, and residents in the nearby 13 buildings have been evacuated as assessments and reconstructions are underway. Chen Zhongqiu/VCG

Cement is being poured into the subsided section of a road in Hangzhou, Zhejiang province, Aug. 28, 2019. A subway line runs under the cave-in, and residents in the nearby 13 buildings have been evacuated as assessments and reconstructions are underway. Chen Zhongqiu/VCG

A woman holds a teddy bear at Costco’s first outlet store in the Chinese mainland in Shanghai, Aug. 29, 2019. Tang Yanjun/CNC/VCG

A woman holds a teddy bear at Costco’s first outlet store in the Chinese mainland in Shanghai, Aug. 29, 2019. Tang Yanjun/CNC/VCG

An aerial view of demolition work on a tilted building in Luohu District in Shenzhen, Guangdong province, Aug. 29, 2019. No casualties have been reported after a six-story residential building partially collapsed. Chen Wen/CNS/VCG

An aerial view of demolition work on a tilted building in Luohu District in Shenzhen, Guangdong province, Aug. 29, 2019. No casualties have been reported after a six-story residential building partially collapsed. Chen Wen/CNS/VCG

A girl holds an umbrella during a rainy day in Hangzhou, Zhejiang province, Aug. 29, 2019. Wu Huang/IC

A girl holds an umbrella during a rainy day in Hangzhou, Zhejiang province, Aug. 29, 2019. Wu Huang/IC

People watch the water released by the Sanmenxia Dam, constructed to prevent floods in Sanmenxia, Henan Province, Aug. 28, 2019. Sun Meng/IC

People watch the water released by the Sanmenxia Dam, constructed to prevent floods in Sanmenxia, Henan Province, Aug. 28, 2019. Sun Meng/IC